A version of that actually happened to my wife when she asked her general dentist for a referral to an ortho. Like you, she could use a couple of tweaks, but already has a very nice smile. The experience with the general dentist really discouraged and embarrassed her. Her next step will be going directly to an ortho in one of the tonier areas like Scottsdale, where they're used to people who want total cosmetic perfection. I expect one of them will take her, since dsmith is right, they mainly want to make money.